vmparam.h revision 1.3 
1/* 	$OpenBSD: vmparam.h,v 1.3 2015/05/12 04:31:10 jsg Exp $	*/
2/*	$NetBSD: vmparam.h,v 1.23 2003/05/22 05:47:07 thorpej Exp $	*/
3
4/*
5 * Copyright (c) 1988 The Regents of the University of California.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the University nor the names of its contributors
17 *    may be used to endorse or promote products derived from this software
18 *    without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 */
32
33#ifndef	_MACHINE_VMPARAM_H_
34#define	_MACHINE_VMPARAM_H_
35
36#define	ARM_KERNEL_BASE		0xc0000000
37
38/* Allow armv7 to have bigger DSIZ than generic arm, allow user to override */
39#ifndef	MAXDSIZ
40#define	MAXDSIZ		(1024*1024*1024)		/* max data size */
41#endif
42#ifndef BRKSIZ
43#define	BRKSIZ		MAXDSIZ			/* heap gap size */
44#endif
45
46#include <arm/vmparam.h>
47
48#ifdef _KERNEL
49/*
50 * Address space constants
51 */
52
53/*
54 * The line between user space and kernel space
55 * Mappings >= KERNEL_BASE are constant across all processes
56 */
57#define	KERNEL_BASE		ARM_KERNEL_BASE
58
59#define VM_KERNEL_SPACE_SIZE	0x10000000
60
61/*
62 * Override the default pager_map size, there's not enough KVA.
63 */
64#define PAGER_MAP_SIZE		(4 * 1024 * 1024)
65
66/*
67 * Size of User Raw I/O map
68 */
69
70#define USRIOSIZE       300
71
72/* virtual sizes (bytes) for various kernel submaps */
73
74#define VM_PHYS_SIZE		(USRIOSIZE*PAGE_SIZE)
75
76/*
77 * max number of non-contig chunks of physical RAM you can have
78 */
79
80#define	VM_PHYSSEG_MAX		2
81#define	VM_PHYSSEG_STRAT	VM_PSTRAT_RANDOM
82
83/*
84 * this indicates that we can't add RAM to the VM system after the
85 * vm system is init'd.
86 */
87
88#define	VM_PHYSSEG_NOADD
89
90#endif /* _KERNEL */
91
92#endif	/* _MACHINE_VMPARAM_H_ */
93